The failure of Einstein’s co-authored “EPR”
attempt to show the incompleteness of quantum theory is demonstrated
directly for spatial degrees of freedom using only elementary
notions. The analysis uses only spatially distributed waves that
collapse on measurement. The same system is modeled more
realistically using three spatially separated, singly ionized
hydrogen molecules.

"Little boxes: A simple implementation of the
Greenberger, Horne, and Zeilinger result for spatial degrees of
freedom" American Journal of Physics, 79(2)(2011), pp. 182-188. Download